Preheat the oven to 350˚F and line a 9 by 5-inch loaf pan with parchment paper, leaving excess on the two longer sides.,
STEP 2
Mash the bananas in a large bowl. Add sugar and butter, and continue to mash with the bananas until almost completely smooth.,
STEP 3
Add the eggs and vanilla and whisk until smooth. Add flour, baking soda, cinnamon and salt, and fold with a rubber spatula until no streaks of flour remain.,
STEP 4
Scrape the batter into the prepared pan and bake for 50 to 55 minutes, or until a cake tester inserted in the center of the loaf comes out clean.,
STEP 5
Let cool for at least 20 minutes, then remove from pan and cool completely on a wire rack before slicing and serving.